Side-slipping weft detector for looms



Dec. 18, 1928.

A. CEDERLUND SIDE SLIPPING WEFT DETECTOR FOR LOOMS Filed July 30, 1926 IN QE/V TO I? BE/PT CEDEHL t/ND Patented Dec. 1 8, 1928.

UNITED STATES ALBERT CEDERLUND, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO CROMPTON,

PATENT. oF-FIC E;.'

& KNOVTLES LOOIVLWORKS, OF WORCESTER, MASSACHUSETTS, A CORPORATION 7 OF MASSACHUSETTS.

SIDESLIPPING WEFT DETECTOR FOR LOOMS.

Application fiIedJuIyBO, 1926. Serial No. 125,853.

This invention relates to side slipping weft detectors for looms and it is the principal object of the invention to provide a very simple Connection betweenthe detector and the weft replenishing mechanism to the end that replenishment may be initiated with a minimum number of parts.

In Patent No. 1,668,393,issued Mayv 1, 1928, to Blanchard there is shown a detector having both sliding and. angular movements with,

respect to a fixed support,,the sliding movement occurring Whensufiicient weft is present and the angular movement taking place when insufficient weft remains on the bobbin.

' There is shown in that application a regularly moving actuator lever the motion of which is interrupted at the time of lndication of weft exhaustion by a controller operatively connected to the sliding andangularly moving detector wire. The connection shown therein requlres an adjustment for, each d1fferent position of the support longitudinally of the shuttle and it is an important object of my present invention to provide a controller so related to the actuator lever as to be properly positioned withoutfurther adjustment for a number of different positions of the detector support. I ,7 1

It is a further object of my presentinvention toprovide a support formed preferably of sheet metal and having a relatively strong body to withstand the pressure of the actuating lever but being so light as not tointerfere with the proper action. of the detector.

WVith these and other objects in view which will appear as'the' description proceeds my invention resides in the combination and arrangement ofparts hereinafter described and set forth in the claims. 7

In the accompanying drawings wherein I have shown a convenient embodiment of my invention,

Fig. 1 is a top plan View of a detector having my invention applied thereto, certain parts being in section and certain other parts being broken away for the sake of clearness,

Fig. 2 is a vertical section on line 2 -2 of Flg. 1, v i I.

Figs. 3 and 4: are vertical sections on lines 3+3 and 44, respectively,.of Fig. 1, and r Fig. 5 is a front elevation of the detector bed and the supporting structure for the same, looking in the direction of arrow A,

Fig. ,1. 7

.Referring to the drawingsit will be seen that l have shown a loom frame'lO having secured thereto the foot of a weft replenishing mechanism indicated at 11, saidfoot supporting'fa stud 12 on which is mounted for angular movement a transferrer arm 13 having dependii'ig fingers 14. The trans! ferrer arm is provided with a heel 15 which engages a fresh bobbin to insert the same into shuttle S at the time of transfer.

A bracket16 is secured to the loom frame long as sufficient weft for continued weaving 7 1s presentthe outer end of lever 18 will be uninterrupted and free to descend but at weft exhaustionsaid outer end will be held in raised position by mechanism tobe described, withthe result that rod 19 willbe depressed creating a conditionwhich as set forth in Patent No. 1,030,748 corresponds to the initiation of Weft replenishment.

The detector comprises a bed 20 mounted on the, foot 21 andhaving adjustable connection with a stand 22 secured to the loom frame 10. This co'nnectionis indicated in Fig. 5 where bolts N, pass through horizontal in the'foot 21. Said bed 20 hasthe upper part tl1ere0f,recessed and surrounded for the mostpart by awall 28. The rear part of the wall isbroken away. to provide. a slot 2 4v slots Hin the stand 22 and" vertical slots 7* i through which. extends a side slip weft de-.

tector25 formed of wire the rear end of.

whichiis notched as at 26; The forward part of the detector 25 extends laterally'as at 27 and thelefthand end thereof is-received ina notch, formed with-the left wall 23 and a lug 28 castintegrally therewith. A light tension spring 29 is attached to a crimped part of the, lateral extension 27 andalso a lug 30 cast on the bed 20, said spring holding the-wire detector 25 in the normal positionindicated in Fig. 1 by-reasonof the'contact' of the lateral extension 27 with the lug 28 and the boss 31 cast integral with the bed 20.

Under normal conditions when there is sufficient weft for continued weaving on the bobbin thetceth 26 will be embedded the yarn on the forward movement of the lay and the detector will be moved forwardly with a right line motion but when insufficient yarn is present the teeth 26 will slide along the denuded bobbin, the wire 25 moving about the aforesaid notch as a center and the extension 2'? moving away from the boss 31 because of the fact that the teeth 26 are offset from the notch. Adjustment of the detector bed 20 in the direction of the length of the bobbin may be obtained by loosening the bolts N and'moving the foot 21 in a ho izontal direction to the desired location. The matter thus far described is common to the devices set forth in the aforesaid patent to Blanchard.

In carrying out my improvements 1 provide a simple controller C for the actuator lever 18;. said controller comprising upper and lower arms 40 and41 respectively, separated to define aspace 42. The. upper arm is provided with a head 43 the lower portion of which slides on the top of a cap'44 secured by screws 45 to the bed 20, said head shdmg under the extended right hand end 46 of the actuator lever 18.

that end of theactuator connected to the rod 19 irrespective of the lateral position of the controller.

In order that the head 43 may be removed from under the actuator lever when sullicient weft is present I provide the lower arm 41 with a notch 47 which bridges the extension 27. The arm 41 is extended upwardly as at 48 to engage the under side of the cap 44 to steady the controller as the samemoves. The

forward wall 23 is provided with a narrow notch 49 which guides the. lower arm 41 and the upper arm is guided by having; the lower part of the head "43 passed between two spaced parallel forwardly extending lugsbO cast on the cap or cover 44. By reasonof the notch 49 and the lugs 50 he controller (1 willbe guided with respect to the support for the detector wire 25 and the actuator lever. lVhen the detector moves forwardly on nonindicating detecting beats the controller will be moved to the left from the position shown in Fig. 3 so that the actuator-lever can descend without interruption, but when the relation between the actuator lever detector swings angularly at the time of indication the controller G Wlll remain practically at rest because of the fact that the notch 47 in the lower arm 41 is very close to the lug 28.

or withdrawing the eats l provide one vthe head 43 from under the actuator lever and the rear part of he detector wire 2" from the path of the incoming bobbin. The

actuator lever 18 extends over the hcad4l throughout limited range of adjr "tment of thesupport for the detector long tudinally of the shuttle;

From the foregoing; it will e seen that l have provided simpleeontroller guided by and laterally movable with the support to any position within a limited range of adjustment without disturbing the operative and the controller head 43.

Having thus described my invention it will be apparent that changes and modifications may be made therein by those skilled in the art without departing from the spirit and scope of the invention, and I do not wish to belimited to the details herein disclosed but what I claim is; V

1. In a weft detector for looms having a supportand a detector movable longitudinally in the support when sufficient weft is presout and movable angularly with respect to the support when insufficient weft is present, an actuator having a regular movement on detecting beats of the loom, a controller carried by the support and operatively connected to the detector to be moved by the latter in a direction substantially parallel with the motion of. the detector on non-indicating. detecting beatsof the loom and having a, portion thereof normally operatively related to the actuator, said actuator having a portion extending laterally on both sides of the coop- .14 with a stud 51 which passes crating part of the controller, and means to vary the position of the support and the detector, the controller and actuator maintaining operative relationship throughout a lim ited range of adjustment of the support.

2. In a weft detector for looms having a support and a detector movable longitudinally in the support when sufficient weft is pres em; and movable angularly with respect to the support when insulficient weft is present an actuator lever movable in a fixed path and having an operative movement on detecting beats of the loom, a controller guidedfor movement in a fixed plane with respect to the support, operative connections between the controller and the detector to give the controller a movement on non-indicating'de tecting beats of the loom, and means to vary the position of the detector and support lengthwise of the actuator, said actuator having a portion normallyextending on both sides of the controller and being operatively related with the latter throughout a limited range of adjustment of the support, the controller carried by the support and maintain ing the same relative position with respect to the support for all adjusted positions of the said support.

3. In a weft detector for looms having a support and a detector movable longitudinally in the support when sufficient weft is pres out and movable angularly with respect to the support when insufficient weft present, an actuator lever movable in a fixed path and having an operative movement; on detecting controller and the support, and the actuator being operatively related with respect to the controller for various adjusted positions of the support longitudinally of the actuator.

4. In a weft detector for looms'having a support and a detector movable longitudinally in the support when suificient weftis present and movable angularly with respect to the support when insuflicient weft is present, an actuator moving in a fixed path and having an operative movement on detecting beats of the loom a controller operatively connected to the detector and having a portion thereof normallylying in the path of the actuator, said controller being formed'ot a flat mem ber having spaced arms one of which is formed with a head lying under the actuator and the other arm being notched to receive a portion of the detector wire, and upstanding spaced guides on the support between which the controller slides. v

In testimony whereof-I have hereunto affixed my signature.

ALBERT CEDERLUND. 

